/*
 * Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
 *
 * This file is part of Resin(R) Open Source
 *
 * Each copy or derived work must preserve the copyright notice and this
 * notice unmodified.
 *
 * Resin Open Source is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * Resin Open Source is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
 * of NON-INFRINGEMENT.  See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Resin Open Source; if not, write to the
 *
 *   Free Software Foundation, Inc.
 *   59 Temple Place, Suite 330
 *   Boston, MA 02111-1307  USA
 *
 * @author Scott Ferguson
 */

package javax.enterprise.event;

import static java.lang.annotation.ElementType.*;
import static java.lang.annotation.RetentionPolicy.*;
import java.lang.annotation.*;

/**
 * The @Observes parameter annotation marks a method as capable of
 * receiving events.  The method must be thread safe, because the
 * BeanManager may fire multiple events at once.
 *
 * The parameter type determines the events the method will observe.
 *
 * <code><pre>
 * public void myObserver(@Observes MyEvent event);
 * </pre></code>
 */
@Documented
@Retention(RUNTIME)
@Target({PARAMETER})
public @interface Observes {
  TransactionPhase during() default TransactionPhase.IN_PROGRESS;

  Reception notifyObserver() default Reception.ALWAYS;
}
